Carriage-spring



' J. U. FIESTIER.

Carriage-Spring.

No; 15,126. Patented June 17, 1856.

STATES PATENT OFFICE.

JOHN U. FIESTER, OF WINCHESTER, OHIO.

CARRIAGE-SPRING.

Specification of Letters Patent No. 15,126, dated June 17, 1856.

To all whom it may concern:

Be it known that I, JOHN U. FIESTER, of Winchester, in the county ofGuernsey and State of Ohio, have invented certain new and usefulImprovements in Carriage- Springs; and I do hereby declare that thefollowing is a full and exact description thereof, reference being hadto the accompanying drawings and to the letters of referenoe markedthereon.

The drawing is a side view of my invention attached to a carriage.

The nature of my invention consists in forming an elastic scroll twistedeleptical curved spring for carriages of steel or (of wood for commonpurposes) being much lighter and cheaper than the elastic springs now inuse.

In the construction of my improvement I have presented the same attachedto a light buggy in which A, the wheels; B, the connecting bar; C, thebraces; E, the seat; F, the elastic scroll twisted eleptical curvedspring; a, the parts of the springs which elongate; Z), the scrolltwisted parts of the springs fitting together in somewhat of a screwform, and at which point they slide past each other in their operation.

In the construction of my coiled scroll twisted spring, I construct itof steel, of equal thickness and strength. I then give the spring ascroll twist by which means I am able to give strength to it withoutincrease of weight in the material.

In the operation of my improvement having made the springs as beforedescribed, (or I may find it practicable to make the springs out of woodfor common purposes), I then fasten the ends of the springs to a pieceof wood, and this piece of wood or iron bar is firmly fastened to thebraces G, C, by means of bolts or clamps, and the seat is attached tothe springs by means of screws; the springs are also made right and leftto each other, so that they will support each other by reason of thebevels or screw form which they possess, constantly bracing each other,as the weight is made to bear on them, and thereby preventing too greata lateral motion. I find that the elasticity is equal to that of anyspring in use. It will be further seen that the ends of the springs aremade stationary, not allowing them to slide; consequently when theweight is applied to the seat the springs are made to yield at the endsa causing the springs at the scroll or bevel parts 6, where they passeach other to yield; it will be seen that at this point they have ascrew action in part, and as they are pressed together they slide pasteach other, and yet retaining their proper position, and allowing theelasticity of the springs to extend to the entire length of the same,thus giving to the springs a vertical and lateral action, which iscontinued until the springs are pressed together horizontally.

Having thus fully describedthe construction and. operation of myinvention, what I claim as new and desire to secure by Letters Patentis:

Forming elastic twisted springs with an elliptical curve for the purposeof giving to the same greater strength and elasticity, and also alateral and vertical motion as herein set forth.

JOHN U. FIESTER.

Witnesses:

T. G. CLAYTON, J. C. CLAYTON.

